ETL is the most dynamic safety certification mark in North America. Its history can be traced back to the electrical testing laboratory founded by Thomas Edison in 1896. It has a wide range of popularity and recognition in North America. ETL logo is the exclusive logo of Intertek Tianxiang Group, the world's leading quality and safety organization. The products obtained by ETL logo meet the mandatory standards of North America and can be sold smoothly in the North American market.

ETL requires factory inspections prior to certification, followed by periodic follow-up factory inspections every quarter. In addition to factory inspections, ETL also pays quarterly certification and licence fees. Factory inspection of us ETL certification needs to be checked 4 times, while Canada is 2 times a year; in both cases, there are 4 times a year.
If necessary, the inspector can witness the retest or sampling after the product is tested in the laboratory.
Licensees must sign a statutory contract (service agreement) with ETL, which clearly specifies the manufacturer's liability and the conditions for the use of consecutive ETL listings and ETL logos.
Application documents

Direct application is required, and the required submission is as follows:

1. application form
2. sample
3. Other related test results and product data, such as product manuals, photos, component lists and so on.
ETL certification is the certification required for products exported to the United States and Canada. The ETL logo indicates that the product has passed the accreditation test of NRTL and SCC Canada. ETL logo recognition has the same effect as UL or CSA logo and meets the relevant safety standards. The product has the ETL column name mark, which means that it has met the minimum requirements of product safety standards. In addition, the ETL logo indicates that the manufacturer's production site meets a certain range of standard requirements and ensures continuous consistency through regular follow-up factory reviews. ETL has appeared for more than 100 years. The three letters of ETL are abbreviations of the Electrical Testing Labs, founded by the inventor Mr. Edison in 1896. ETL represents innovative, influential, independent and open product testing and rich experience.